Finding the Third Proportional to 123,364.50 and 265,440

Step by Step Solution

1. Step 1: Write the proportion equation
   123,364.50 : 265,440 = 265,440 : x
2. Step 2: Convert to fraction form
   123,364.50/265,440 = 265,440/x
3. Step 3: Cross multiply
   123,364.50x = 265,440 × 265,440
4. Step 4: Simplify right side
   123,364.50x = 70,458,393,600
5. Step 5: Solve for x
   x = 70,458,393,600/123,364.50
6. Step 6: Final answer
   x = 571,139.94